How do we know whether or not we are dreaming or simply affected by a particular experience? Or if we are dreaming about all our experiences in this world… When we dream, we fantasize images and events that happen, often, with the same sense of reality that we have when we are awake. René Descartes; a French philosopher discovered the argumentation theory of dreams, stating that there are no reliable signs distinguishing the probability of being asleep and fully awake. Quoting Descartes, he states: For all we know now, we could be dreaming right now. (Rockney 102) When Descartes remembers occasions that occur while he is dreaming, he falsely believes that he has a conscious mind, as when he is awake. Reflecting on this, Descartes believes he cannot tell whether he is dreaming or not. In Descartes' own words, he quotes: I remind myself that on many occasions I have been deceived in sleep... I see so clearly that there are no certain indications by which we can clearly distinguish waking from sleep. (Rockney 102) This statement states that Descartes believes this...